Christian Andreas Doppler () ( 29 November 1803 – 17 March 1853 ) was an Austrian mathematician and physicist.

Christian Doppler was raised in Salzburg, Austria, the son of a stonemason.

Doppler referred to himself as Christian Doppler.

The records of his birth and baptism stated Christian Andreas Doppler.

Forty years after Doppler's death the misnomer Johann Christian Doppler was introduced by the astronomer Julius Scheiner.

* Alec Eden: Christian Doppler: Leben und Werk.

Moving the Stars — Christian Doppler: His Life, His Works and Principle, and the World After.

Christian Doppler ’ s Youth in Salzburg and Vienna.

), Christian Doppler – Life and Work.

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In 1803, Barton W. Stone led a group of revivalist New Light Presbyterian ministers to form independent Springfield Presbytery which eventually became the Christian Church ( Disciples of Christ ).

* March 17 – Christian Doppler, Austrian mathematician ( b. 1803 )

** Antoine Guenée, French priest and Christian apologist ( d. 1803 )

* Denmark: On 16 March 1792 King Christian VII issued a decree forbidding any Danish subject from taking part in the trade after 1 January 1803 – Denmark thus became the first country to ban the trade ;

In 1803 he became a student of philosophy and theology at the University of Helmstedt, where Heinrich Henke was his most influential teacher ; but the latter part of his university course was taken at the Göttingen, where Johann Gottfried Eichhorn and Thomas Christian Tychsen were then at the height of their popularity.

Back in that time, their Christian faith brought them to build a straw-and-mud oratory, under advocation of Nuestra Señora del Carmen, forming the Chapel in June 1803 being the first priest doctor José García Miranda.

Their Christian faith inspired them to build a straw-and-mud oratory, with the prompting of Nuestra Señora del Carmen ; the Chapel was finished in June 1803.

In 1803 and 1804, a group of Christian pietists led by George Rapp arrived from Württemberg, Germany, settled in Harmony, Pennsylvania, and formed the Harmony Society in 1805.

The origins of the Apostolic Christian Church are found in the dramatic conversion experience of Samuel Heinrich Froehlich ( 1803 – 1857 ) of Switzerland.

In an 1803 letter to Joseph Priestley, Jefferson states that he conceived the idea of writing his view of the " Christian System " in a conversation with Dr. Benjamin Rush during 1798 – 99.

Wilhelm Perthes engaged the collaboration of the most eminent German geographers of the time, including Stieler, Heinrich Berghaus ( 1797 – 1884 ), Christian Gottlieb Reichard ( 1758 – 1837 ), who was associated with Stieler in the compilation of the atlas, Karl Spruner ( 1803 – 1892 ), and Emil von Sydow ( 1812 – 1873 ).

In 1803 and 1804, a group of Christian pietists led by George Rapp arrived from Württemberg, Germany, settled in Harmony, Pennsylvania, and formed the Harmony Society in 1805.

By the annexations in 1803 and 1814 Hanover had become a state of three Christian denominations.

Convinced of the feasibility of the plantations, an edict was issued in the name of King Christian VII by his son Prince Frederick ( who was then Regent because of his father's mental illness ) on 16 March 1792, which came into effect on 1 January 1803.

* Christian Doppler ( 1803 – 1853 ), who discovered the Doppler effect

The story of Sophonisba also served as subject for works by John Marston ( 1606 ), David Murray ( 1610 ), Nathaniel Lee ( 1676 ), Daniel Caspar von Lohenstein ( 1680 ), Henry Purcell ( 1685 ), Antonio Caldara ( 1708 ), Leonardo Leo ( 1718 ), Luca Antonio Predieri ( 1722 ), James Thomson ( 1729 ), Niccolò Jommelli ( 1746 ), Baldassare Galuppi ( 1747, 1764 ), Tommaso Traetta ( 1762 ), Antonio Boroni ( 1764 ), Christopher Gluck ( 1765 ), Maria Teresa Agnesi ( 1765 ), Mattia Vento ( 1766 ), François Joseph Lagrange-Chancel, revised by Voltaire ( 1770 ), Christian Gottlob Neefe ( 1776 ), António Leal Moreira ( 1783 ), Joseph Joaquín Mazuelo ( 1784 ), Vittorio Alfieri ( 1789 ), Pietro Alessandro Guglielmi ( 1802 ), Marcos Portugal ( 1803 ), Ferdinando Paer ( 1805 ), Vincenzo Federici ( 1805 ), Luigi Petrali ( 1844 ), Emanuel Geibel ( 1869 ), Jeronim de Rada ( 1892 ), Giuseppe Brunati ( 1904 ), Dimitrie Cuclin ( 1945 ), Vasco Graça Moura ( 1993 ), and others.

Architect Christian Frederik Hansen, who resurrected the palace between 1803 – 1828, was also commissioned to rebuild the palace chapel in 1810.

* Reil, Johann Christian ( 1803 )

* Charles Christian ( 1792 – 1803 )

* Christian Frederick ( later Count of Castell-Rüdenhausen ) ( 1773 – 1803 )

Martinus Christian Wesseltoft Rørbye ( 17 May 1803 – 29 August 1848 ) was a Danish painter, known both for genre works and landscapes.

There, he married the dancer Sophie Karsten, daughter of a famous Swedish opera singer Christoffer Christian Karsten and the Polish actress Sophie Stebnowska, in 1803.

In 1803 Prince Alexius Frederick Christian of Anhalt-Bernburg was elevated to the rank of a duke by Emperor Francis II of Habsburg.